Hammer



FIG. 1 is a front perspective view of a hammer showing my new design;

FIG. 2 is a rear perspective view of the hammer;

FIG. 3 is a front elevation view of the hammer;

FIG. 4 is a rear elevation view of the hammer;

FIG. 5 is a right side elevation view of the hammer, the left side elevation being a mirror image thereof;

FIG. 6 is a top plan view of the hammer; and,

FIG. 7 is a bottom plan view of the hammer. 

The ornamental design for a hammer, as shown and described. 